ムレハタタテダイ

noun

false moorish idol

A species of butterflyfish (Heniochus diphreutes), often seen in schools. Distinguished from the similar moorish idol by a shorter snout and different schooling behavior.

• ダイビング中ちゅうにムレハタタテダイの群むれを見みた。

  I saw a school of false moorish idols while diving.